Actress Sarah Jessica Parker is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Actress Sarah Jessica Parker is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Actress Sarah Jessica Parker is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Actress Sarah Jessica Parker is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Amy Fine Collins of Vanity Fair is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Amy Fine Collins of Vanity Fair is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Actresses (L-R) Kate Hudson and Michelle Williams is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City. less

Actresses (L-R) Kate Hudson and Michelle Williams is wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as she attends the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in ... more

Models Doutzen Kroes and Cato van Ee are wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as they attend the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City. less

Models Doutzen Kroes and Cato van Ee are wearing Diamonds from the Tiffany & Co. 2013 Blue Book Collection as they attend the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York ... more

Actress Alice Eve and model Poppy Delevingne wear Diamonds from the Tiffany & Co. 2013 Blue Book Collection at the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Actress Alice Eve and model Poppy Delevingne wear Diamonds from the Tiffany & Co. 2013 Blue Book Collection at the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City.

Frederic Cumenal, Executive Vice President of Tiffany & Co. and Chairman and CEO Mike Kowalski (R) pose with actress Carina Lau at the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New York City. less

Frederic Cumenal, Executive Vice President of Tiffany & Co. and Chairman and CEO Mike Kowalski (R) pose with actress Carina Lau at the Tiffany & Co. Blue Book Ball at Rockefeller Center on April 18, 2013 in New ... more